no guru. all skill.
rajan gupta · the 3am nerd
it × ai × life · 20 years of building the systems that move healthcare data
when your 834 enrollment file breaks at 3 AM, someone has to fix it. i’ve been that someone for 20 years. now i write about it.
Java, MuleSoft, Kafka, EDI, FHIR, React, Swift — i’ve touched every layer of the healthcare data stack. from X12 transactions to FHIR R5 APIs, from batch EDI processing to real-time event streaming.
currently focused on the intersection of healthcare interoperability and AI — helping organizations navigate the CMS Prior Authorization mandate (January 2027) and modernize their integration architecture.
what i write about
- 🔥 war stories from 20 years in the trenches
- 🧠 it × ai × life — where the industry is heading
- 📐 visual explainers that make complex systems simple
- 🛠️ tools, workflows, and the builder’s journal
- 🌶️ hot takes the industry needs to hear